Images, VMs and 32 vs 64bit

I was wondering if images for different platforms (Mac, Linux, Windows) and VMs (32bit, 64bit) are, code-wise, the same?  By "the same", I mean do they all have the exact same code base or some classes/methods are in some and not in others or different? ----------------- Benoît St-Jean Yahoo! Messenger: bstjean Twitter: @BenLeChialeux Pinterest: benoitstjean Instagram: Chef_Benito IRC: lamneth Blogue: endormitoire.wordpress.com "A standpoint is an intellectual horizon of radius zero".  (A. Einstein)